Tech Archives - Page 2 of 4

Galileo: Analysis and Reporting Of Experiments

June 8, 2022

Galileo: Analysis and Reporting Of Experiments Summary In order to run an analysis on experiments running on Galileo, we have built the analysis and reporting module of Galileo. Instead of teams running their analysis manually, Galileo provides the results...

Quadrant: Time-Series Database to Visualize Live Galileo Traffic and KPIs

January 5, 2022

Quadrant: Time-Series Database to Visualize Live Galileo Traffic and KPIs Summary In order to speed up the diagnosis of potential issues with experiments and rollouts in our Galileo experimentation platform, we built Quadrant – a flexible, cheap, and fast...

Hubble: Orchestrating Spark SQL & AWS Batch for Experimentation Analysis

January 4, 2022

Hubble: Orchestrating Spark SQL & AWS Batch for Experimentation Analysis Summary In order to build segments, run experimentation analysis and execute metrics queries for Galileo, our new experimentation platform, we built Hubble – a generic and reliable task queue. Hubble...

Using ElasticSearch Synonyms To Improve Search Results

December 28, 2021

Not too long ago, shoppers used to rely on salespeople to help them find exactly what they were looking for. Salespeople were also trained well enough to understand the customer’s needs and pick out the perfect product for them, or...

Data & AI

Galileo: Efficiently Encoding Segments for Client-Side Dynamic Configuration

November 9, 2021

Galileo: Efficiently Encoding Segments for Client-Side Dynamic Configuration Summary As Careem set out building a dynamic configuration system (for rollouts and A/B tests), we needed to support any kind of segmentation and make sure it is reliable and scalable. This...

Data & AI

Galileo: Scalable Platform for Dynamic Configuration & Experimentation

November 9, 2021

Galileo: Scalable Platform for Dynamic Configuration & Experimentation Summary In order to unify feature toggling and experimentation, consolidate existing tools and enable data-driven decision making in Careem, we have built a custom, state-of-the-art dynamic configuration and experimentation platform internally named...

CrazyWall – Graph-based Identity Fraud Detection

July 7, 2021

Careem has had rapid growth in popularity, exceeding 50 million user accounts today. It has also recently expanded from just ride-hailing into other services such as payments, food, groceries, and more in an attempt to become the Middle East’s leading...

A Week of Learning Agile Development

January 3, 2021

Away from the hustle of production work, we organized a series of team activities to grow our agile development capabilities. Each full-day of activity was themed: Day 1 — Refactoring Day 2 — Code Smells Day 3 — Testing Legacy...

Data & AI

Crisis, Replication and A/B Testing

May 4, 2020

Background “Science is in a methodological crisis” — this seems to be a common sentiment among academics. In a survey of 1,500 researchers, 70% of them said they had failed to replicate another scientist’s experiment [1]. In a 2009 study, 14%...